Aptitude - Time and Distance - Discussion
Discussion Forum : Time and Distance - General Questions (Q.No. 6)
6.
In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is:
Answer: Option
Explanation:
Let the duration of the flight be x hours.
| Then, | 600 | - | 600 | = 200 |
| x | x + (1/2) |
 |
600 | - | 1200 | = 200 |
| x | 2x + 1 |
x(2x + 1) = 3
2x2 + x - 3 = 0
(2x + 3)(x - 1) = 0
x = 1 hr. [neglecting the -ve value of x]
Discussion:
206 comments Page 14 of 21.
Naziya said:
10 years ago
Any one solve this simple and shortly? How this x+1/2 came? I'm not getting.
Vineet said:
8 years ago
Hi, Can anyone tel that how to calculate speed and what is the final answer?
Manik jaat said:
1 decade ago
Saravanakgopi can you please tell me that how you get 5400 instead of 600 ?
(1)
Aarman said:
1 decade ago
Please solve anyone this equation 600/x-600/x+1/2=200 I can't understand.
Rafi said:
1 decade ago
Your right shanti but is there any easy and time saving solution for it?
Aditya said:
8 years ago
Does anybody think the 1/2 should be added to make the answer to 1.5hr?
Gobinath P said:
7 years ago
Any other ways to solve this question? Please tell me the shortcut way.
Muzzu said:
6 years ago
T+30 = 600/400,
T+30/60 = 3/2,
T+1/2 = 3/2,
T= 3/2-1/2,
T= 1 hour.
T+30/60 = 3/2,
T+1/2 = 3/2,
T= 3/2-1/2,
T= 1 hour.
(3)
Khushbu said:
1 decade ago
@Avy.
In equation (2x-3)(x+1) =0.
Then x=3/2 and x = -1.
So how x=1?
In equation (2x-3)(x+1) =0.
Then x=3/2 and x = -1.
So how x=1?
Kavita said:
1 decade ago
How you take 1200/2x +1? If you get 1200 then how its possible 2x+1.
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